GM Service Manual Online
For 1990-2009 cars only
Trunk Ajar Switch: The scan tool displays the status of the trunk ajar switch.

Trunk Motor: The scan tool displays the current state of the trunk release motor.

Trunk Release Solenoid Command: The scan tool displays the status of the truck release solenoid output control.

Trunk Release Switch: The scan tool displays the status of the trunk release switch input.